He is Bachelor of Arts, 1987 (University College Dublin (National University of Ireland), Graduate in Journalism, 1989 and Ph. D. in Communication, 1995 (School of Communication, University of Navarra). From 1992 to 1993, he carried out research for his Ph.D. at the Media Studies Center based in Columbia University.

He has published over forty academic articles and presented papers in many International Congresses and Conferences. His books include: News Standards at ABC, CBS and NBC (1996), Digital Broadcast Journalism (2002) The Convergence Challenge for Broadcast News (2006) Globalization and Pluralism. Reshaping Public TV in Europe (2010) and Fundamentos de Teoría de la Comunicación Mediática (2014). His academic production can be traced here http://scholar.google.es/citations?user=HN0SitcAAAAJ&hl=es and here https://umh-es.academia.edu/JGarc%C3%ADaAvil%C3%A9s.

He was editor of Boletín Bit, a newsletter for TV News professionals (2001-2004), consultant for Antena Aragón TV (2004) and blogger for El Nautilus, Telemanía (2007-2008). He worked as a journalist for Telelex TV (Alicante), KCOP Channel 13 (Los Angeles) and Euroview (Pamplona). Since 2006, he collaborates with Onda Cero Radio Elche and other local media.